Years after the Bapheus victory, Osman Bey's children have become beys. As Osman Bey continues his conquest for Bursa, news arrives that Sultan Mesud has been poisoned, sparking a power struggle for the Sultanate.

Yakup Bey confronts Osman Bey, demanding his allegiance. Cerkutay returns to Yenişehir Palace, creating a festive atmosphere but harbors anger towards Osman Bey.

Osman Bey believes Sultan Mesud's treasure is the key to ending Yakup Bey's dominance. He tasks Orhan Bey with finding the treasure and Alaeddin Bey with monitoring Yakup Bey. Learning of the treasure, Yakup Bey is determined to claim it for power, setting the stage for a race between the two factions.

Yakup Bey conquered Lefke Castle before Osman Bey and claimed to give it to him, but Osman Bey suspects Yakup Bey's intentions. A new enemy, Master Gera, arrives at the Edges. Disguised as a merchant, he meets Osman Bey, who invites him to Yenişehir. Master Gera's arrival brings chaos, and he plans to kill Boran Bey, Osman's trusted man.

Osman Bey plans to unite against the Mongols by paying their tax and gathering an army with Yakup Bey. Despite the raid on Yenişehir Palace and the stolen treasury, he remains determined.

Osman Bey and his alps escape from the Mongols and plan a counter-raid. News of a raid on Söğüt spreads, causing alarm.

Osman Bey and Yakup Bey rush to Kestel to rescue their captive children, Orhan and Mehmet. The Tekfur of Kestel demands castles in exchange for their release. Yakup Bey agrees, but Osman Bey opposes, aiming to rescue the children and conquer Kestel.

Karacelasun seeks vengeance for his brother and meets Master Gera, considering an alliance. Orhan Bey and Holofira's love grows, but Malhun Hatun upsets Holofira. Alaeddin Bey and Gonca Hatun clash, and Karacelasun raids the Uch Bazaar, angering Mehmet Bey who blames Osman Bey. Osman Bey, aware of danger, remains steadfast.

Osman Bey rescues Yakup Bey from Karacelasun, emphasizing his commitment to Islam. Karacelasun seeks revenge with a new plan against Osman Bey, who assigns Orhan Bey to thwart him.

Karacelasun seeks revenge and allies with Master Gera to kill Osman Bey's son, Alaeddin. Bala Hatun, learning of Alaeddin's capture, confronts Saadet Hatun at Uç Pazar.

Osman Bey hints at knowing Yakup Bey's schemes, planning to reveal them while hosting the beys. Orhan Bey takes Holofira, causing tension with Mehmet and confrontations with Saadet and Malhun Hatun. Alaeddin confesses his love to Gonca, seeking Bala Hatun’s advice. Yakup Bey plans to exchange Vasilis for gold with the Crusaders, influenced by Master Gera. Malhun Hatun insists Holofira must become a Muslim to marry Orhan, which she refuses.

Orhan, Alaeddin, and Mehmet Beys fight Karacelasun with all their might, seeking to break his superiority. Osman Bey suspects Ayhan Ağa advised Yakup Bey on the exchange, aiming to uncover the truth and reveal Master Gera's true face.

Osman Bey establishes an independent principality, celebrated with prayers and festivities in Yenişehir. Yakup Bey sees this as a challenge, questioning what his next move will be when facing Osman Bey.

Osman Bey vows revenge after witnessing the great massacre in Söğüt. He prepares to confront Gorklu Khan. Yakup Bey informs Yenişehir tradesmen that he won't collect taxes in Uç Pazar, leading to a plan by Bala and Malhun Hatun to counter this move. Saadet Hatun threatens Ülgen Hatun by revealing that Cerkutay is spying, causing Ülgen to make a critical decision. Saadet Hatun also tells Bala Hatun that Alaeddin should stay away from Gonca, with an unclear motive behind her warning. Gorklu Khan threatens Yakup Bey while searching for the princess, putting Yakup Bey in a difficult position. Karacelasun kidnaps Holofira to exchange her for the princess, leading to a confrontation with Orhan Bey. The outcome of their entrapment remains uncertain. Finally, Osman Bey and Gorklu Khan face each other with their armies, ready for a significant encounter.

Osman Bey, determined to establish a state, faces Karacelasun, who raids Uraz Bey's camp, and Görklü Han, who prepares for war at Yenişehir's gates. Osman Bey's response to the Mongol threat is crucial. Bala Hatun and Malhun Hatun plan to rescue Orhan Bey and Holofira from the Mongols. Meanwhile, Mehmet Bey goes into a frenzy upon seeing Alaeddin Bey and Gonca Hatun together, leading to a significant fight. Holofira's aunt Olivia, with Yakup Bey's support, demands an explanation at Yenişehir Palace, causing a confrontation between Osman Bey and Yakup Bey. These events highlight the growing tension and conflicts Osman Bey must navigate to achieve his goals.

Orhan Bey, Olivia, and Kite meet Tekfur Leo, who promises them Princess Maria. Orhan Bey's motives are unclear, and the situation impacts his love with Holofira. Following the Yenişehir raid, Alaeddin Bey prevents Yakup Bey from leaving, citing a traitor. Osman Bey aims to keep Yakup in Yenişehir for strategic reasons. Cerkutay faces trial for espionage in Yenişehir, with an execution order looming. Yenişehir remains unsettled as Yakup Bey is shot with an arrow. Saadet Hatun blames Osman Bey's people and confronts Bala Hatun. A new threat emerges with Taceddin Noyan, known for cruelty. Elçim Hatun informs Osman Bey, leading to uncertainty about the Kayıs' fate against Noyan.

Osman Bey faces two new enemies: Taceddin Noyan and the Executioner of Rome, aware that the Tekfurs may rebel. His new goal is to conquer Kite Castle, and he must decide on a strategy. Malhun Hatun is unsure about going on a pilgrimage after a confusing dream. Meanwhile, Saadet Hatun seeks forgiveness from Bala Hatun, potentially easing tensions between Germiyan and Kayı. Alaeddin Bey, angered by Gonca's spying, confronts her harshly, leaving their future uncertain. Orhan Bey, on duty with Elçim Hatun, must clarify their situation to Holofira, who is disappointed by what she sees.

Taceddin Noyan aims to make Osman Bey submit, but Osman plans a counter-move. Taceddin Noyan meets Mehmet Bey in Uç Pazar, and Gonca Hatun, aware of this, informs Alaeddin Bey before being shot.

Osman Bey surprises Taceddin Noyan by attacking his army at headquarters, catching and punishing him in his tent. Efendize Elçim Hatun and her sister-in-law Ayça discuss Orhan Bey, praising his bravery. Gündüz Bey suggests a wedding to ensure Kayı unity, proposing Orhan Bey and Elçim Hatun's marriage. Osman Bey must consider this, with Holofira's feelings in mind. Alaeddin Bey attempts to secretly bring the wounded Gonca Hatun to Yenişehir Palace for treatment. Meanwhile, İmren Tegin, who declared war on Osman Bey, intimidates him by bringing the bloodied Bayındır Bey to Yenişehir, vowing that peace will end only with the last Kayi's death. Angered by recent events, Osman Bey declares war, ready to seek revenge on İmren Tegin.

Osman Bey plans to mislead İmren Tegin by pretending to conquer Atranos before marching on Kite. Gündüz Bey and Elçim Hatun join him on this mission. There is curiosity about the developing relationship between Malhun Hatun and Elçim Hatun. Meanwhile, İmren Tegin sets a counter-strategy against Osman Bey, learning Gündüz Bey's desire for Orhan and Elçim's marriage and collaborating with Olivia to prevent it.

Osman Bey plans to break the Ilkhanate and Crusader alliance. During an attack on Gonca Hatun's caravan, Alaeddin Bey helps her, echoing their past cooperation.

Osman Bey prepares his army for his ambitious goal, setting a new plan into motion. Elçim Hatun's anger towards Holofira persists, creating tension with Orhan Bey. Mehmet Bey's news from Kütahya causes a problem for Gonca and Alaeddin. Alaeddin proposes marriage to Gonca, awaiting her response.

Spring brings victories, as Ramadan and Nevruz coincide. Osman Bey decides to spend Ramadan with his tribe, anticipating what awaits them.

The fight between Boran and Konur causes a stir in the tribe, awaiting Osman Bey's decision. Olivia sees this as advantageous and plans to exploit it.

Osman Bey gathers his people to save Gündüz Bey and plans a strategic move against İmren Tegin. He also acts to save Uç Pazar, raising the Germiyan flag there again, which could impact Germiyan-Kayı relations positively.

Orhan Bey and Elçim Hatun's wedding preparation excites Osman Bey, who also plans to counter the alliance between Yakup Bey and Candaroğlu.

Osman Bey, determined to save his son, devises a plan to end discord, confronting Ulcay directly. Ahmet's death causes tension in the Kayı tribe, with Osman Bey detaining İbrahim Bey and Yakup Bey to prevent further bloodshed.

Osman Bey fights against a trap and confronts Boran, deciding his fate. Melike Hatun returns to the market, seeking revenge on Alaeddin, Gonca, and the Kayı tribe with a surprising method.

Osman Bey confronts Yakup Bey and İbrahim Bey over the murder of the judge to save Alaeddin. Tensions rise, but Yunus Emre's arrival impacts the hostility.

Osman Bey is determined to capture Mekece Castle, despite opposition from Yakup Bey and İbrahim Bey, who have allied with the Tekfur. Gonca Hatun struggles with the war between Germiyan and Kayı, torn between her love and her ancestral home.